IT doesn't make you stronger at all. I've taken and no it doesn't feel like it's bad for you, but I've heard things that it is. You get dehydrated way quicker on it, so if your going to take it, drinks lots and lots of fluids until you can't drink anymore andt then drink another litre.
Creatine provides extra energy for up to 25 seconds of exertion and allows recovery time to speed up by a lot. That's probably it's most beneficial factor, recovery time. You'll be able to work out harder each day, therefore making you stronger by being able to work out harder. the stuff itself doesn't make you any stronger